使用（或不使用）内存创建UIButton [英] Create a UIButton with (or without) memory

问题描述

我正在尝试添加带代码的UIButton（不是Interface Builder）。

I'm trying to add a UIButton with code (not Interface Builder).

有些例子说你必须为按钮分配和释放内存。

Some examples say you MUST alloc and release memory for the button.

其他人使用buttonWithType并神奇地创建一个按钮而根本不分配任何内存。

Others use buttonWithType and magically create a button without alloc'ing any memory at all.

这怎么可能？

（两者似乎都运行良好。）

(Both seem to work fine.)

我想要使用以下两种方法中的哪一种...什么时候？ 1种方法或其他方法是否有一些巨大的好处？

Which of the 2 methods do I want to use... and when? Are there some huge benefits to 1 method or another?

PLEASE 不要告诉我只是去阅读文档。文档是我在这里的原因。他们似乎很少解释事情而不会遗漏大量的遗漏信息。

PLEASE don't tell me to just go "read the docs". The docs are the REASON I am here. They rarely seem to explain things without leaving out tons of 'missing info'.

推荐答案

buttonWithType： 确实使用内存，但自动释放。这意味着将来某个时候它将发布。所以 [UIButton buttonWithType：] 相当于 [[[UIButton alloc] initWithFrame：] autorelease] 。

buttonWithType: does use memory, but it is autoreleased. This means that it will be released at some point in the future. So [UIButton buttonWithType:] is equivalent to [[[UIButton alloc] initWithFrame:] autorelease].

您可以使用任何一种方法，具体取决于您是否要明确或不发布。

You can use either method, depending on whether you want to be explicit or not about releasing.

这篇关于使用（或不使用）内存创建UIButton的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！